Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-05-2015, 02:37 PM   #21
Guru
 
READY2GO's Avatar
 
City: Marathon, Florida
Vessel Name: Walkabout
Vessel Model: 1989 Sea Ray 380 Aft Cabin
Join Date: Jan 2012
Posts: 521
Portuguese

I just looked at all the pics from your fliker link. Wow! what an incredible build. You should be very proud. You are definitely a more patient than me.
__________________
"Whenever you find yourself on the side of the majority, it is time to pause and reflect." Mark Twain

www.mikeandsharondunsworth.blogspot.com
READY2GO is offline   Reply With Quote
Old 06-05-2015, 02:53 PM   #22
Guru
 
City: gulf coast
Join Date: Jun 2014
Posts: 3,440
if this is the boat you just launched then you probably have a new common rail engine. Filter advice from guys running 40 YO slow diesels doesn't apply. Your engine maker will have very specific advice regarding bio fuel and filtration. These are critical issues on common rail engines.
bayview is offline   Reply With Quote
Old 06-05-2015, 05:16 PM   #23
Guru
 
cappy208's Avatar
 
City: Cape Cod
Vessel Name: Slip Aweigh
Vessel Model: Prairie 29
Join Date: Oct 2013
Posts: 1,219
Quote:
Originally Posted by bayview View Post
if this is the boat you just launched then you probably have a new common rail engine. Filter advice from guys running 40 YO slow diesels doesn't apply. Your engine maker will have very specific advice regarding bio fuel and filtration. These are critical issues on common rail engines.
That's true to a point. But what has changed is the viscosity and make up of Biodiesel. It has random amounts of coagulants in it. It is a blend of vegetable, used cooking oil and diesel. They sometimes do not get the blend just right. The only way to get it to thin out is to keep it heated. A boat that is using biodiesel and keep running (with the return heating up the tank) sees almost no issues. But a boat with a tank full, and just sitting there will be crudded up in no time, and get filled with a 'gelatin' coating. Almost like wax or paraffin. The mentioned 'pre filter' of a centrifuge type filter is most often seen installed to combat this. BUT, the best way to avoid it is to not buy biodiesel.

What the manual says is often trumped with what is seen in the field. I frequently haul biodiesel in 4.2 million gallon lots. More often than not our tanks are a complete mess. The bio additive part is literally hanging off the frames and ladders in the tanks like strands of goo. The stuff is tenacious. It takes several hours of hot water washing to clean the tanks for the next load. Customers have to pay extra for cleaning to get rid of the stuff so it doesn't contaminate the next cargo. This was a huge issue several years ago when it was introduced, since no one knew about these qualities. The operators were left holding the financial bag since there had never been anything like this residue before, to deal with when switching cargoes. Now it is routinely put into the contracts that tanks with bio blends are subject to being professionally cleaned after haulage.
cappy208 is offline   Reply With Quote
Old 06-05-2015, 05:28 PM   #24
Senior Member
 
City: MD
Vessel Name: Blue Yonder
Vessel Model: 37
Join Date: Mar 2013
Posts: 346
Quote:
Originally Posted by bayview View Post
if this is the boat you just launched then you probably have a new common rail engine. Filter advice from guys running 40 YO slow diesels doesn't apply. Your engine maker will have very specific advice regarding bio fuel and filtration. These are critical issues on common rail engines.
+1

I don't know what kind of motor is in the boat. If it is a Cummins, they provide instructions on how to use biodiesel in their motors and how to properly filter the fuel.

Cummins Engines
BlueYonder is offline   Reply With Quote
Old 06-05-2015, 05:58 PM   #25
Dauntless Award
 
Wxx3's Avatar
 
City: Wrangell, Alaska
Vessel Name: Dauntless
Vessel Model: Kadey Krogen 42 - 148
Join Date: Jan 2013
Posts: 2,820
Quote:
Originally Posted by cappy208 View Post
That's true to a point. But what has changed is the viscosity and make up of Biodiesel. It has random amounts of coagulants in it. It is a blend of vegetable, used cooking oil and diesel. They sometimes do not get the blend just right. The only way to get it to thin out is to keep it heated. A boat that is using biodiesel and keep running (with the return heating up the tank) sees almost no issues. But a boat with a tank full, and just sitting there will be crudded up in no time, and get filled with a 'gelatin' coating. Almost like wax or paraffin. The mentioned 'pre filter' of a centrifuge type filter is most often seen installed to combat this. BUT, the best way to avoid it is to not buy biodiesel.

What the manual says is often trumped with what is seen in the field. I frequently haul biodiesel in 4.2 million gallon lots. More often than not our tanks are a complete mess. The bio additive part is literally hanging off the frames and ladders in the tanks like strands of goo. The stuff is tenacious. It takes several hours of hot water washing to clean the tanks for the next load. Customers have to pay extra for cleaning to get rid of the stuff so it doesn't contaminate the next cargo. This was a huge issue several years ago when it was introduced, since no one knew about these qualities. The operators were left holding the financial bag since there had never been anything like this residue before, to deal with when switching cargoes. Now it is routinely put into the contracts that tanks with bio blends are subject to being professionally cleaned after haulage.


It's always nice to get some low inference data for a change.
THANKS.
__________________
Richard on Dauntless,
New York

a Kadey Krogen 42 currently: https://share.garmin.com/dauntless
Blog:
https://dauntlessatsea.com
Wxx3 is offline   Reply With Quote
Old 06-05-2015, 06:56 PM   #26
Guru
 
cappy208's Avatar
 
City: Cape Cod
Vessel Name: Slip Aweigh
Vessel Model: Prairie 29
Join Date: Oct 2013
Posts: 1,219
Quote:
Originally Posted by Wxx3 View Post


It's always nice to get some low inference data for a change.
THANKS.
The nice thing about low inference data is, the receptor has to be cognizant of how to receive it, and how to use it! (or even if they can understand the data!)
cappy208 is offline   Reply With Quote
Old 06-05-2015, 09:48 PM   #27
Guru
 
cappy208's Avatar
 
City: Cape Cod
Vessel Name: Slip Aweigh
Vessel Model: Prairie 29
Join Date: Oct 2013
Posts: 1,219
The original question was about biodiesel and filters. The manufacturers make filter specs to run their engines. Bio diesel is an 'emerging' product. In the U.S. The specs have been under just about constant review, morphing into different (usually lesser quality) standards. I can only imagine what the QC is like in Brazil. It is just about impossible to state with certainty what anyone should do concerning filters or biodiesel (except to find straight diesel) when the base product has so many different viscosities, ingredients and need for filtering.

Just because someone isn't aware of the differences in fuel quality does not mean it isn't giving people 'fits' around the globe.

A true centrifugal fuel purifier is very labor intensive to clean. Sort of takes away any benefit to using bio fuel as a lure to reduce carbon.
cappy208 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 03:39 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012